Since capacitors can store electrical energy in the form of a electrostatic field between its plates, one can derive that potential energy by looking at the work it takes to "push" the charges around to create the voltage.
Therefore Work =
integral from 0 to Q of V(q) dq =
integral from 0 to Q...
In a --specifically uniform electric field-- (I may be wrong here) my understanding is that the dipoles will result in no net dipole force (due to cancelling out) but there will actually be a net torque experienced about the center. This torque will be trying to turn the dipole so the moment, p...
In the giancoli physics textbook for engineers and scientists, it says
"E=F/q where E is the force on a small positive test charge at rest..."
Then about one paragraph later it proceeds to say
"If q is positive, F and E point in the same direction. If q is negative, F and E point in opposite...
I'm SORRYYYY :cry::cry::cry::cry::cry::cry::cry::cry::H:H:H:H:H:H:H:H
I even had to check the lil button that said -I have followed the homework format
:cry:
I have a question on finding potential for a disc of charge when it comes to the simple integration
how does the integral of R'dR'/etc have the R'dR' just disappear? i thought it would then be R^2/2
I am obviously missing something here
Hi, I was wondering why dipoles are singled out as a separate section in my physics textbook. For instance, after discussing electric fields the textbook specifies what a dipole is, dipole moment, and the electric field for a dipole. Finding the e-field for a dipole would be the same as finding...
so for uniform charge densities, a point "r" from the center of a ring of charge has an
E ∝ 1/r^2
a point "r" from center of a long line of charge has an
E ∝ 1/r
and for an infinite plane, a point "r" from it where r<<length of plane has
E not dependent on r
my question was why is it that...
so I was reviewing my textbook on calculating electric field when we can assume a continuous charge distribution and they said three useful tools are
(1) making use of symmetry
(2) expressing the charge dq in terms of charge density lambda
(3) and checking the answer at the limit of large r...